XR76117 Datasheet, PDF (6/18 Pages) Exar Corporation – PowerBloxTM 15A Synchronous

XR76117
Typical Performance Characteristics
Efficiency and Package Thermal Derating
Unless otherwise specified: T_AMBIENT = 25°C, no airflow, f = 800kHz. Efficiency data includes inductor losses, schematic
from the Application Information section of this datasheet.
100
98
0.36µH (1.0V, 1.2V, 1.5V)
96
0.56µH (1.8V, 2.5V)
94
1µH (3.3V, 5.0V)
92
90
88
86
84
82
80
78
76
74
72
70
0.1
5.0V DCM
3.3V DCM
2.5V DCM
1.8V DCM
1.5V DCM
1.2V DCM
1.0V DCM
1.0
IOUT (A)
600kHz
5.0V CCM
3.3V CCM
2.5V CCM
1.8V CCM
1.5V CCM
1.2V CCM
1.0V CCM
10.0
Figure 3. Efficiency, V_IN = 12V
100
98 ^{0.36µH (1.0V, 1.2V, 1.5V)}
96 0.56µH (1.8V, 2.5V)
94 1µH (3.3V)
92
90
88
86
84
82
80
78
76
74
72
70
0.1
3.3V DCM
2.5V DCM
1.8V DCM
1.5V DCM
1.2V DCM
1.0V DCM
1.0
IOUT (A)
600kHz
3.3V CCM
2.5V CCM
1.8V CCM
1.5V CCM
1.2V CCM
1.0V CCM
10.0
Figure 4. Efficiency, V_IN = 5V
130
120
110
100
90
80
70
60
5.0V, CCM, 600kHz
50
2.5V, CCM, 800kHz
40
1.0V, CCM, 800kHz
30
3
5
7
9
11
13
15
IOUT (A)
Figure 5. Maximum T_AMBIENT vs. I_OUT, V_IN = 12V,
No Airflow
130
120
110
100
90
80
70
60
50
40
30
3
3.3V, CCM, 600kHz
1.8V, CCM, 800kHz
1.0V, CCM, 800kHz
5
7
9
11
13
15
IOUT (A)
Figure 6.Maximum T_AMBIENT vs. I_OUT,
V_IN = 5V, No Airflow
REV1A
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